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5efaa119 | 1 | /* |
8ff78169 MK |
2 | * Copyright (c) 1980,1983,1988 Regents of the University of California. |
3 | * All rights reserved. | |
5efaa119 | 4 | * |
8ff78169 MK |
5 | * Redistribution and use in source and binary forms are permitted |
6 | * provided that this notice is preserved and that due credit is given | |
7 | * to the University of California at Berkeley. The name of the University | |
8 | * may not be used to endorse or promote products derived from this | |
9 | * software without specific prior written permission. This software | |
10 | * is provided ``as is'' without express or implied warranty. | |
11 | * | |
12 | * @(#)netdb.h 5.9 (Berkeley) %G% | |
5efaa119 KM |
13 | */ |
14 | ||
f3ac96de SL |
15 | /* |
16 | * Structures returned by network | |
17 | * data base library. All addresses | |
18 | * are supplied in host order, and | |
19 | * returned in network order (suitable | |
20 | * for use in system calls). | |
21 | */ | |
22 | struct hostent { | |
23 | char *h_name; /* official name of host */ | |
24 | char **h_aliases; /* alias list */ | |
25 | int h_addrtype; /* host address type */ | |
26 | int h_length; /* length of address */ | |
be3764b5 | 27 | char **h_addr_list; /* list of addresses from name server */ |
84156e4e | 28 | #define h_addr h_addr_list[0] /* address, for backward compatiblity */ |
f3ac96de SL |
29 | }; |
30 | ||
31 | /* | |
32 | * Assumption here is that a network number | |
33 | * fits in 32 bits -- probably a poor one. | |
34 | */ | |
35 | struct netent { | |
37164239 JL |
36 | char *n_name; /* official name of net */ |
37 | char **n_aliases; /* alias list */ | |
38 | int n_addrtype; /* net address type */ | |
39 | unsigned long n_net; /* network # */ | |
f3ac96de SL |
40 | }; |
41 | ||
42 | struct servent { | |
43 | char *s_name; /* official service name */ | |
44 | char **s_aliases; /* alias list */ | |
45 | int s_port; /* port # */ | |
46 | char *s_proto; /* protocol to use */ | |
47 | }; | |
48 | ||
49 | struct protoent { | |
50 | char *p_name; /* official protocol name */ | |
51 | char **p_aliases; /* alias list */ | |
52 | int p_proto; /* protocol # */ | |
53 | }; | |
54 | ||
55 | struct hostent *gethostbyname(), *gethostbyaddr(), *gethostent(); | |
56 | struct netent *getnetbyname(), *getnetbyaddr(), *getnetent(); | |
57 | struct servent *getservbyname(), *getservbyport(), *getservent(); | |
58 | struct protoent *getprotobyname(), *getprotobynumber(), *getprotoent(); | |
c0bcfdb1 KD |
59 | |
60 | /* | |
61 | * Error return codes from gethostbyname() and gethostbyaddr() | |
8ff78169 | 62 | * (left in extern int h_errno). |
c0bcfdb1 KD |
63 | */ |
64 | ||
8ff78169 | 65 | #define HOST_NOT_FOUND 1 /* Authoritative Answer Host not found */ |
c0bcfdb1 KD |
66 | #define TRY_AGAIN 2 /* Non-Authoritive Host not found, or SERVERFAIL */ |
67 | #define NO_RECOVERY 3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */ | |
8ff78169 MK |
68 | #define NO_DATA 4 /* Valid name, no data record of requested type */ |
69 | #define NO_ADDRESS NO_DATA /* no address, look for MX record */ |